{# register modal #}
<div id="registerModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title">登录</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
      {# form 表单 #}
        <form>
          <div class="form-group">
            <label for="username">用户名</label>
            <input type="text" class="form-control" id="username" aria-describedby="emailHelp" placeholder="Enter email">
            <small id="emailHelp" class="form-text text-muted">用户名不对外提供</small>
          </div>
          <div class="form-group">
            <label for="password">密码</label>
            <input type="password" class="form-control" id="password" placeholder="Password">
          </div>
          <div class="form-group form-check">
            <input type="checkbox" class="form-check-input" id="rememberPwd">
            <label class="form-check-label" for="rememberPwd">记住密码</label>
          </div>
        </form>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">取消</button>
        <button type="button" class="btn btn-primary">注册</button>
      </div>
    </div>
  </div>
</div>
